President Trump will address the Values Voter Summit in Washington Saturday night. His speech comes as there's a growing concern in his evangelical base over his decision to pull troops out of Syria because it leaves US allies like the Kurds and Syrian Christians without protection.

As the president shows no signs of changing his mind when it comes to pulling US troops out of Syria, his evangelical base, which played a key role in sending him to the White House in 2016, is speaking out and letting him know they do not support him in the pullout.

"It's going to probably go down as the worst decision of his presidency," conference attendee Noah Brandt from Missouri told CBN News.

Many at the summit fear that the US pulling support out of Syria will put religious minorities and our Kurdish allies in imminent danger.

"I was talking with a lot of people last night and people were saying this is the first time that President Trump has done something that they really disagree with," said Anna Kepes from Illinois

Brandt told CBN News he also has concerns about the president's phone call with the president of Ukraine.

"I don't think that the president of the United States should be using his political power to try to hurt his political opponents. And I think that even a charitable reading of the transcript shows that's probably what President Trump was trying to do."

And while he thinks an inquiry is alright, he doesn't think House Democrats should lead it.

"There might be some smoke for this one, but I don't know if they can be trusted based on what they've done in the past," he remarked.